The KelTec RDB 20-inch green bullpup rifle in 5.56mm (KelTec part no. RDB20GRN) puts the action behind the grip so a long barrel fits in a compact, well-balanced package. Spent casings eject downward and out of the shooter’s line of sight, which makes the rifle shoot the same from either shoulder, and the controls are fully ambidextrous. Two rails and standard AR-15 magazines make it easy to set up around the way you shoot.

Key Specifications

• Chambered in 5.56mm, the caliber the maker lists for this RDB.
• The barrel is 20 inches long, with the action behind the grip so the rifle stays compact overall.
• Capacity is 20 rounds per magazine.
• The rifle takes AR-15 style magazines, so spares are easy to find.
• Spent casings eject downward, away from the shooter’s line of sight.
• The controls are fully ambidextrous, so the rifle works as well for a left-handed shooter as a right-handed one.
• Two integral MIL-STD-1913 Picatinny rails, one above the barrel and one along the handguard, carry optics and accessories.
• Multiple sling attachment points accept hook-style swivels.
• The center of gravity sits over the grip assembly, which keeps the rifle balanced during extended use.
• The color is green, as the maker lists it for this part number.

Frequently Asked Questions

What magazines does the RDB use? It is compatible with AR-15 style magazines, and capacity for this version is 20 rounds.

Can a left-handed shooter use the RDB? Yes. The controls are fully ambidextrous and spent casings eject downward, so the rifle handles the same from either shoulder.

Can I mount an optic on the RDB? Yes. Two integral MIL-STD-1913 Picatinny rails, one above the barrel and one along the handguard, give you space for optics and accessories.

Buy the KelTec RDB Bullpup Rifle, 5.56mm, 20-inch Barrel, Green, 20-Round

The RDB with a 20-inch barrel gives you rifle-length velocity without rifle-length bulk. Order the green version from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more semi-auto rifles while you are here.